of engine
u can change air filter (K&N o open pod like apexi's)
denso idrium spark plugs
lightened & Dampered Crank Pulley
Port n polish
Performance Cam shaft
Adjustable Cam Gear
form work exhaust system (4-2-1 til the end :P)
Just wondering is it possible to turbocharge a VVTI engine assuming only a small turbo pressure is required (0.3 bar)? What about the ECU ? What will happen to the VVT mechanism?